It’s simple to regulate the temperature in this tiny house using the heater and fan. A portable swamp (evaporative) cooler works well in arid climates like those of the desert Southwest, but a small AC unit will excel in the humid parts of the country.
Over the winter, ETH continued to work on their spec tiny home. All plumbing outlets and PEX pipes have been installed. Since then, sinks and fixtures have been added.